05 ford escape 3.0 no spark from 2 coil packs. Swapped in 2 good coils still no spark. What fires the coils?

05 ford escape 3.0 no spark from 2 coil packs. Swapped in 2 good coils still no spark. What fires the coils?

Read more: 05 ford escape 3.0 no spark from 2 coil packs. Swapped in 2 good coils still no spark. What fires the coils?